如果我没记错的话，我假设你想让你的所有点在地图上以最高的缩放级别可见。我通过将地图的缩放级别初始化为16来实现这一点(不确定它是否是V3上可能的最高缩放级别)。

var map = new google.maps.Map(document.getElementById('map_canvas'), {
  zoom: 16,
  center: marker_point,
  mapTypeId: google.maps.MapTypeId.ROADMAP
});

然后我做了边界的事情:

var bounds = new google.maps.LatLngBounds();

// You can have a loop here of all you marker points
// Begin loop
bounds.extend(marker_point);
// End loop

map.fitBounds(bounds);

结果: 成功!

在这个函数中，您只需要动态添加元数据来存储几何类型，因为该函数接受任何几何。

“fitGeometries”是一个扩展映射对象的JSON函数。

"geometries"是一个通用的javascript数组，而不是MVCArray()。

geometry.metadata = { type: "point" };
var geometries = [geometry];

fitGeometries: function (geometries) {
    // go and determine the latLngBounds...
    var bounds = new google.maps.LatLngBounds();
    for (var i = 0; i < geometries.length; i++) {
        var geometry = geometries[i];
        switch (geometry.metadata.type)
        {
            case "point":
                var point = geometry.getPosition();
                bounds.extend(point);
                break;
            case "polyline":
            case "polygon": // Will only get first path
                var path = geometry.getPath();
                for (var j = 0; j < path.getLength(); j++) {
                    var point = path.getAt(j);
                    bounds.extend(point);
                }
                break;
        }
    }
    this.getMap().fitBounds(bounds);
},

请尝尝这个。

// Find out what the map's zoom level is
zoom = map.getZoom();
if (zoom == 1) {
  // If the zoom level is that low, means it's looking around the
world.
  // Swap the sw and ne coords
  viewportBounds = new
google.maps.LatLngBounds(results[0].geometry.location, initialLatLng);
  map.fitBounds(viewportBounds);
}

如果这对你有帮助的话。

愿一切都好！

请试试这个:

map.fitBounds(bounds);

// CHANGE ZOOM LEVEL AFTER FITBOUNDS
zoomChangeBoundsListener = google.maps.event.addListenerOnce(map, 'bounds_changed', function(event) {
  if (this.getZoom()){
    this.setZoom(15);
  }
});
setTimeout(function(){
  google.maps.event.removeListener(zoomChangeBoundsListener)
}, 2000);

我看到许多不正确或太复杂的解决方案，所以决定张贴一个工作，优雅的解决方案。

setZoom()没有像你期望的那样工作的原因是fitBounds()是异步的，所以它不能保证它会立即更新缩放，但是你对setZoom()的调用依赖于这一点。

你可能会考虑在调用fitBounds()之前设置minZoom map选项，然后在调用完成后清除它(这样用户仍然可以手动缩小):

var bounds = new google.maps.LatLngBounds();
// ... (extend bounds with all points you want to fit)

// Ensure the map does not get too zoomed out when fitting the bounds.
gmap.setOptions({minZoom: 6});
// Clear the minZoom only after the map fits the bounds (note that
// fitBounds() is asynchronous). The 'idle' event fires when the map
// becomes idle after panning or zooming.
google.maps.event.addListenerOnce(gmap, 'idle', function() {
  gmap.setOptions({minZoom: null});
});

gmap.fitBounds(bounds);

此外，如果你也想限制最大缩放，你可以对maxZoom属性应用同样的技巧。

请参阅MapOptions文档。

为了配合另一个解决方案-我发现“监听bounds_changed事件，然后设置新的缩放”方法对我来说并不可靠。我认为我有时在地图已经完全初始化之前调用fitBounds，初始化导致一个bounds_changed事件，将使用侦听器，在fitBounds改变边界和缩放级别之前。我最终得到了这段代码，到目前为止似乎还可以工作:

// If there's only one marker, or if the markers are all super close together,
// `fitBounds` can zoom in too far. We want to limit the maximum zoom it can
// use.
//
// `fitBounds` is asynchronous, so we need to wait until the bounds have
// changed before we know what the new zoom is, using an event handler.
//
// Sometimes this handler gets triggered by a different event, before
// `fitBounds` takes effect; that particularly seems to happen if the map
// hasn't been fully initialized yet. So we don't immediately remove the
// listener; instead, we wait until the 'idle' event, and remove it then.
//
// But 'idle' might happen before 'bounds_changed', so we can't set up the
// removal handler immediately. Set it up in the first event handler.

var removeListener = null;
var listener = google.maps.event.addListener(map, 'bounds_changed', () => {
  console.log(map.getZoom());
  if (map.getZoom() > 15) {
    map.setZoom(15);
  }

  if (!removeListener) {
    removeListener = google.maps.event.addListenerOnce(map, 'idle', () => {
      console.log('remove');
      google.maps.event.removeListener(listener);
    });
  }
});